CVE-2026-62254

MEDIUM

MEDIUM Priority: 0.01 BB Relevance: 36/100

Published: 2026-10-30 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local

AC: Low

PR: None

UI: Required

S: Unchanged

C: None

I: None

A: High

Description

LibreDWG is a free C library to read and write DWG files. Prior to 0.14, a specially crafted R13-R2000 DWG can trigger algorithmic resource exhaustion in `decode_R13_R2000` in `src/decode.c`. The class-decoding loop performs `realloc` on every iteration without a sanity check on `num_classes`. Manipulating that field forces an extremely slow allocation loop and denial of service when the file is parsed. Running the parser in a sandbox with memory limits is a workaround rather than a remediation. This issue is fixed in version 0.14.